This happened while I am solving player badge achievements recently…
When I cleared “ELEVENTH RANK”, several new achievements I’ve already confirmed their request showed up. Two of them are “EPIC EVOLUTION” and “BLUE INTENSITY”.
I received these 2 rewards, but actually they give me the same badge (Titanoboa) twice.
Soon later, I found a T-rex and cleared “MUST SHOOT FASTER”, and it gave me the badge of blue, not T-rex. To simplified the bug happened on me, here’s the diagram.
Due to the above bugs happened, I think the real problem is my whole badge reward order broken. Not sure if I correctly delivered the bug or not, because my native language isn’t English.